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All Journal Jurnal Farmasi Udayana Agrikultura AGROEKOTEKNOLOGI JURNAL ILMU PERTANIAN Jurnal Penelitian Pertanian Terapan Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Jurnal Agro Estate Journal La Lifesci PERTANIAN TROPIK Agrotech Journal Agroista: Jurnal Agroteknologi Agroland: Jurnal Ilmu-ilmu Pertanian

Mariani sembiring

Program Studi Agroteknologi, Fakultas Pertanian, USU, Padang Bulan, Medan- 20155, Indonesia.

Author-ID : 315614

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Environmental Science Immunology & microbiology Medicine & Pharmacology

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Perkembangan Cacing Pontoscolex corethrurus Pada Media Kultur dengan Berbagai Jenis Tekstur Tanah dan Bahan Organik Andi Andi; Tengku Sabrina; Mariani Sembiring
Jurnal Agroekoteknologi Vol 5, No 2 (2017)
Publisher : Universitas Sumatera Utara

Application of Pontoscolex corethrurus gives the positive effect to soil properties. Recently, P.corethrurus is directly collected from field which are time consuming and costly. This research aimed to determine the best organic matter and soil texture types as the artificial culture medium in supporting the P.corethrurus growth. This research was conducted in Ecological and Biological Laboratory, Agriculture Faculty, University of Sumatera Utara. This research was conducted in two phases, with using factorial randomized block design. The first factor was types of soil texture i.e. sandy loam (60% sand; 24% silt; 16% clay), Clay (28% sand; 20% silt; 52% clay), clay loam (36% sand; 28% silt; 36% clay). The second factor was types of organic matter i.e. without organic matter, cow manure, sheep manure, and hevea leaf litter. The result showed that in both phases of experiment the best soil texture types in increasing earthworm biomass and cocoon number of P.corethrurus was sandy loam, following with treatment on texture clay loam, and clay respectively. The best organic matter treatments in increasing earthworm biomass and cocoon number of P.corethrurus in phase 1 was sheep manure, cow manure, Hevea leaf litter, and without organic matter respectively. Application of sheep manure on sandy loam soil and application of sheep manure on clay soil had the same potency in increasing P.corethrurus biomass only in first phase experiment. Keywords : Culture medium, Earthworm application, Organic matter, Pontoscolex corethrurus, Soil texture

Aplikasi Mikroba Pelarut Fosfat dan Bebarapa Sumber Pupuk P Untuk Meningkatkan Serapan P dan Pertumbuhan Tanaman Jagung Pada Andisol Terdampak Erupsi Gunung Sinabung vijay sitanggang; Mariani Sembiring; fauzi fauzi
Jurnal Agroekoteknologi Vol 5, No 4 (2017)
Publisher : Universitas Sumatera Utara

Penelitian ini bertujuan untuk mengetahui pengaruh aplikasi mikroba pelarut fosfat dan berbagai sumber pupuk P serta interaksinya untuk meningkatkan ketersediaan P dan pertumbuhan tanaman jagung (Zea mays L.) pada andisol terdampak eruspsi gunung sinabung. Rancangan yang digunakan pada penelitian ini disusun dalan Rancangan Acak Kelompok Faktorial yang terdiri dari 2 faktor dengan 3 ulangan Faktor I : mikroba pelarut fosfat (M) dengan 3 taraf dosis (ml/10 kg BTKO): M0 (0), MB (Bulcholderia cepacia) (20), MF (Talaromices phinophylus) (20) dan Faktor II : sumber pupuk fosfat (P) dengan 4 jenis taraf (g/10 kg BTKO) yaitu: P0 (0), PS (3,18), PT (2,5) dan PR (4,1).Hasil penelitian menunjukkan pemberian mikroba pelarut fosfat berpengaruh nyata dalam meningkatkan pH tanah, Populasi mikroba, serapan P tanaman,dan pertumbuhan tanaman jagung. Pemberian berbagai sumber pupuk fosfat berpengaruh nyata dalam meningkatkan, serapan P tanaman, dan pertumbuhan tanaman jagung. Interaksi antara mikroba pelarut fosfat dan berbagai sumber pupuk Fosfat berpengaruh nyata dalam meningkatkan serapan P tanaman dan pertumbuhan tanaman jagung.

Kajian Kesuburan Tanah pada Lahan Pertanian di Kecamatan Lumban Julu Kabupaten Toba Samosir Alfredo Sitorus; Bintang Sitorus; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 2, April (2018)
Publisher : Universitas Sumatera Utara

Penelitian ini bertujuan untuk mengetahui tingkat kesuburan tanah pada lahan pertanian di Kecamatan Lumban Julu Kabupaten Toba Samosir dengan luas + 9.090 Ha. Metode penelitian yang digunakan adalah metode purposive sampling dengan 8 Satuan Peta Lahan. Penelitian ini dimulai pada Mei 2015. Analisis P tersedia dengan metode Bray I, C-Organic dengan metode Walkley and Black, N-total dengan metode Kjeldahl, pH dengan ekstraksi H2O NH4OAc 1N pH 7, Na tukar NH4OAc 1N pH 7, Catukar NH4OAc 1N pH 7, Mg tukar NH4OAc 1N pH 7 and KTK dengan ekstraksi NH4OAc 1N pH 7. Hasil menunjukkan bahwa pH dominan pada kriteria asam, C-Organic dominan pada kriteria sangat rendah, N-total dominan pada kriteria rendah, P tersedia dominan pada kriteria rendah, K tukar dominan pada kriteria tinggi, Na tukar dominan pada kriteria rendah, Ca tukar dominan pada kriteria rendah, Mg tukar dominan pada kriteria sangat rendah - rendah, KTK dominan pada kriteria rendah - sedang.Kata Kunci :Kesuburan Tanah, Lahan Pertanian, Lumban Julu

Potential Test of Sulphate Reducing Bacteria (SRB) To Changes the Acidity of Sulphate Acid Soil and Corn Growth with Different Water Content in Green House yudi sudarno sihombing; Asmarlaili Sahar Hanafiah; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

This study aimed to determine the potential for a superior sulphate reducing bacteria (SRB) from tested on acid sulfate soil with different water content. The research activities carried out in the Laboratory of Soil Biology and Green House of Faculty Agriculture, University of North Sumatra. The research used Randomized Block Design with 2 treatments : SRB isolate (control, LK4, LK6, TSM4, TSM 3, AP4, AP3, LK4+TSM3, LK4+AP4, LK4+AP3, LK6+TSM3, LK6+AP4, LK6+AP3, TSM4+TSM3, TSM4+AP4, TSM4+AP3) and water condition (100% field capacity and 110% field capacity). The results shown application of isolate LK4+AP4 with water condition 110% field capacity decreased the soil sulphate content (27,38 ppm) significantly after week 6. Application of isolate LK4+AP3 with water condition 110% field capacity increase soil pH (5,58) significantly after week 6. Application of isolate LK4 with water condition 110% field capacity increase the plant growth (140 cm; 25,74 g) significantly after week 6. The best treatment was application isolate LK4 with water condition 110% field capacity (RBS population 2,5x108; soil sulphate content 29,10ppm; soil acidity 4,78; plant height 140cm; plant weight 25,74gr). Keywords : pH, Soil Sulphate Content, Sulphate Reducing Bacteria, Water Condittion.

Mapping of Soil Phospor and Potassium on Paddy Land with 200 Cropping Intensity System in Tanjung Rejo Village Percut Sei Tuan Sub District of Deli Serdang District Ade Ine Imansari; Razali Razali; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 3, Juli (2018)
Publisher : Universitas Sumatera Utara

This research is aimed to describe soil phosphorus and pottasium spread in 200 Cropping Intensity paddy field. Location in Tanjung Rejo village Percut Sei Tuan sub district Deli Serdang district, Laboratory of Geographic Information System Agriculture Department of Universitas Sumatera Utara, Laboratory of Soil Chemical and Indonesian Oil Palm Research Institute Laboratory. Soil sampling was done with free grid of storey level semi detail method. Parameters were soil phosphate (HCl 25%) and Soil Pottasium (HCl 25%) and questioner of paddy field. The data was analyzed with interpolation method. The result showed that soil phosphorus spread divided into two criteria’s, respectively medium and high. In the medium criteria was 0,7% of total area and for high criteria was 99,3% of total area with phosphate fertilizer recommendation is SP-36 75 kg / ha / season for medium P2O5 nutrient status and SP-36 50 kg / ha / season for high P2O5 nutrient status. While in soil pottasium spread divided into three criteria’s, the low criteria was 0,4% of total area, for medium criteria 23,7% of total area and for high criteria was 75,9% of total area. with pottasium fertilizer recommendation is KCl 50 kg / ha / season for low K2O nutrient status and no need to fertilized for medium and high K2O nutrient status. Keywords: cropping intensity, fertilization, interpolation, soil phosphorus, soil pottasium.

Evaluasi Kesesuaian Lahan Untuk Tanaman Jagung (Zea Mays L.) dan Ubi Jalar (Ipomoea batatas L.) di Kecamatan Kualuh Selatan Kabupaten Labuhanbatu Utara Aslan Pasaribu; Zulkifli Nasution; Mariani Sembiring
Jurnal Agroekoteknologi Vol 6, No 4,Okt (2018)
Publisher : Universitas Sumatera Utara

This study aims to evaluate the suitability of corn crop plant (Zea mays L.) and sweet potato (Ipomea batatas L.) in South Kualuh Subdistrict of North Labuhanbatu District. The method used in this research is survey method From the results of the overlay from the map of soil types, map of topography, and map of height place, retrieved 5 units of land use map. SPL 1 has an area of 34.95 hectares, SPL 2 has an area of 12.96 hectares, and SPL 3 has an area of 24.96 hectares, SPL 4 has an area of 159.85 hectares, and SPL 5 has an area of 73 hectares. The result at this research showed the highest potential of land suitability classes in set of land 1 is corn (S2 tc) and sweet potato (S2 tc, wa), in set of land 2 is corn (S2 tc) and sweet potato (S2 tc, wa), in set of land 3 is corn (S2 tc) and sweet potato (S2 tc , wa), in in set of land 4 is corn (S2 tc) and sweet potato (S2 tc, wa), in set of land 5 is corn (S2 tc) and sweet potato (S2 tc, wa).

Pengaruh Konsentrasi Pupuk Organik Cair Buah-Buahan dan Cara Aplikasinya Terhadap Serapan N Dan Pertumbuhan Tanaman Sawi (Brassica Juncea L.) Pada Tanah Ultisol rahmayanti rahmayanti; Jamilah Jamilah; Mariani Sembiring
Jurnal Agroekoteknologi Vol 7, No 2,April (2019)
Publisher : Universitas Sumatera Utara

This study aims to determine the effect of the concentration of liquid organic fertilizer (LOF) of fruits and its application on the N absorption and growth of mustard plant on ultisol soil. This study used a two-factor randomized group design with 3 replications. The first factor concentration of LOF with 4 levels ie P0 = 0ml LOF + 100ml water /polybag, P1 = 25ml LOF + 75ml water /polybag, P2 = 50ml LOF + 50ml water /polybag, P3 = 75ml LOF+ 25ml water /polybag, and the second factor of application of LOF with 3 levels that is B1= watered, B2= Sprayed, B3=½ watered and ½ sprayed. The results showed that giving LOF increases of soil pH by 5.78%, N absorption by 1.82 %; and number of leaves by 7.33%, wet weight by 1.47%, dry weight by 1.64%. The application method increases of soil pH by 7.05%, the number of leaves by 15.33%, and wet weight by 23.15%, dry weight by 2.39%, and N absorption by 9.87% and; The interaction of giving concentration of LOF and the application method increases of soil pH by 10.65%, and number of leaves by 37.52%, wet weight by 23.37% and dry weight by 4.86%, N absorption by 23.57 %. The best combination treatment is 75ml LOF + 25ml water and ½ watered + ½ sprayed.

Hubungan Beberapa Faktor Produksi dan Salinitas Terhadap Produktivitas Padi Sawah (Oryza sativa L.) di Desa Rugemuk, Kecamatan Pantai Labu Ropikoh Hasibuan; Supriadi Supriadi; Mariani Sembiring
Jurnal Agroekoteknologi Vol 7, No 2,April (2019)
Publisher : Universitas Sumatera Utara

ABSTRACT Rice is a plant that is classified as vulnerable to the maternity environment so that it can reduce productivity. The efficient use of production factors can increase maximum profits for rice production. This study aims to determine the impact of extensive land area, fertilizer application, pesticide on the productivity of paddy rice, to determine the limits of salinity land suitability to productivity of paddy rice. This research was conducted in Rugemuk Village, Pantai Labu District and Laboratory of Chemical and Soil Fertility, Research and Technology, Faculty of Agriculture, University of North Sumatra in July-September 2018. This study uses a purposive sampling method. The parameters measured were extensive of land area, N fertilizer, P fertilizer, K fertilizer, pesticide, salinity and productivity of lowland rice. Data were tested by regression analysis and correlation.The results showed the that : simultaneously the extensive of land area, N fertilizer, P fertilizer, K fertilizer and pesticide are positively correlated to the productivity of paddy rice, in partially salinity correlates negatively to the productivity of paddy rice. Limit the suitability of land for salinity rice between the classes in suitable with unsuitable is 3.74 dS/m. Keywords: lowland rice, factors of production, salinity, land suitability, productivity

Co-Authors Abdul Rauf Abdul Rauf Ade Ine Imansari Agustini, Fenny Alfredo Sitorus Alida Lubis Amos Simanungkalit Andi Andi Armando Septian Simbolon Armando Septian Simbolon Aslan Pasaribu Asmarlaili S. Hanafiah asmarlaili sahar hanafiah Beatrix I. L. J. Sinaga Benny Hidayat Benny Hidayat Bintang Sitorus Bintang Sitorus Budi Ananda Pratama Cynthia Simanjuntak Damanik, Revandy Damanik, Revandy I.M Danu Syahputra Lubis Deni Elfiati Deni Elfiati Edi Sigit Sutarta Edi Sigit Sutarta Eko Andreas Sihite Fauzi Fauzi Githa Noviana Guntoro Guntoro . Hardy Guchi Hendrik Dharmansyah Imam Ramadhan Intan Safitri Jamila Jamilah Jamilah Jamilah Jul Bahori Panggabean Julpan Lynneus Sitohang Lady Sarah M.M.B. Damanik Manullang, Yedija Mardiana Wahyuni Mardiana Wahyuni@gmail.com Marta Ritonga Meilissa Damayanti Lumban Gaol Muhammad Maulana Ghifari Muhammad Nazarul Yanis Muhammad Yusuf Dibisono Mukhlis Mukhlis Muklis Muklis Ni Komang Sri Lumbung Artha Wardani Nofriyanto Pakolo Nur Ulina Warnisyah S Sebayang, Nur Ulina Warnisyah S Posma Marbun Putra, P. A. S. Putu Oka Samirana rahmayanti rahmayanti Raja Forman Barasa Razali Ricky Elmando Saragih Ridwandi Ridwandi Rino P. C. Purba Rizky Dharmawan Margolang, Rizky Dharmawan Margolang, Ropikoh Hasibuan Sakiah Sakiah Sakiah Sakiah Sarifuddin Sarifuddin Sitohang, Julpan Lynneus Sitorus Sitorus Supriadi Supriadi Susianti Susianti Marbun T Sabrina T Sabrina T. Sabrina Tengku Sabrina Tengku Sabrina Tioner Purba Tosuko Utomo Triani, Agus vijay sitanggang Viky Fatmala Wahyuni, Mardiana Yopie Priest Aulia Sinaga yudi sudarno sihombing Zoel Hani Hasibuan Zulkifli Nasution Zulkifli Nasution

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